Date: Sat, 12 Dec 2009 13:39:01 +0200 From: Alexander Motin <mav@FreeBSD.org> To: Stefan Bethke <stb@lassitu.de> Cc: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: ahci and ICH7? Message-ID: <4B2380D5.1090102@FreeBSD.org> In-Reply-To: <F8E407F5-CB7D-4351-9D77-B965AF1AE4F7@lassitu.de> References: <F8E407F5-CB7D-4351-9D77-B965AF1AE4F7@lassitu.de>
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Stefan Bethke wrote: > After being very satisfied with ahci(4) on an Intel DG45FC (G45 chipset) with 8-stable, I tried on a box with a Asus P-P5G41 (G41 chipset), but ahci is not attaching. atapci continues to attach, and I'm wondering whether I'm doing something wrong, the BIOS is misconfigured, or ahci can't talk to ICH7-based AHCIs? I'm loading ahci from loader.conf. There are several types of ICH7. Most of them doesn't support AHCI mode. Rare exceptions are ICH7R and ICH7M AFAIR. G41 is low-end desktop chipset, which uses low-end ICH7 SB, so usually there is no luck. > atapci1@pci0:0:31:2: class=0x01018f card=0x81791043 chip=0x27c08086 rev=0x01 hdr=0x00 > vendor = 'Intel Corporation' > device = '82801GB/GR/GH (ICH7 Family) Serial ATA Storage Controller' > class = mass storage > subclass = ATA To make ahci(4) attach, you should have there subclass SATA or RAID. It may depend on BIOS settings. -- Alexander Motin
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